$ git clone -n https://src.fedoraproject.org/rpms/rust-shared_library.git /var/lib/mock/f40-build-2571991-62241/root/chroot_tmpdir/scmroot/rust-shared_library
Cloning into '/var/lib/mock/f40-build-2571991-62241/root/chroot_tmpdir/scmroot/rust-shared_library'...
$ git fetch origin 456056260850c1ebd69cdf3a8d0c3e4457f1e3e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-shared_library
 * [new ref]         456056260850c1ebd69cdf3a8d0c3e4457f1e3e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4560562 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild